| 张培阔,姜根山,张伟,孙建浩.一维指数型温度场中的声透射理论与数值研究*[J].,2025,44(5):1131-1138 |
| 一维指数型温度场中的声透射理论与数值研究* |
| Theoretical and numerical study of sound transmission in one-dimensional exponential temperature field |
| 投稿时间：2024-05-16 修订日期：2025-08-27 |
| 中文摘要: |
| 该文为了研究e指数形式的温度场对声透射特性的影响，用理论计算和数值模拟的方法，模拟了递增式温度场对声透射特性的影响，得到了声压的解析解，结果表明：透射系数随频率增大而增大，超过临界频率透射系数趋于稳定；模拟了单峰式温度场中的声透射特性，发现取临界频率时透射系数有最小值。临界频率随非均匀温区宽度的增大而减小，得出了计算临界频率的经验公式；透射系数随温区两端温差的增大而减小，由此提供了一种利用声透射系数测量温度的方法。 |
| 英文摘要: |
| In order to study the influence of the temperature field in the form of e-exponent on the acoustic transmission characteristics, this paper uses theoretical calculation and numerical simulation methods to simulate the influence of the increasing temperature field on the acoustic transmission characteristics and obtains the analytical solution of the sound pressure. The results show that the transmission coefficient increases with the increase of frequency and tends to be stable beyond the critical frequency. The transmission characteristics in unimodal temperature field are simulated, and it is found that the transmission coefficient has a minimum value when the critical frequency is taken. The critical frequency decreases with the increase of the nonuniform temperature zone width, and the empirical formula for calculating the critical frequency is obtained. The transmission coefficient decreases with the increase of the temperature difference between the two ends of the temperature range, which provides a method to measure the temperature by using the transmission coefficient of sound. |
| DOI：10.11684/j.issn.1000-310X.2025.05.004 |
| 中文关键词: 非均匀温度场 临界频率 透射系数 声波测温 |
| 英文关键词: Non-uniform temperature field Critical frequency Transmission coefficient Acoustic temperature measurement |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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